DDN Storage SFA7700 Series, How-To Manual

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© 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 19
Figure 23 – Serial number with date code information
The tables that follow break down the date code into year, month, and day of the battery pack’s
manufacture.
Year/Month/Day (YMD) = Date of Manufacture
Year Code Month Code Month Code Month Code
2014 4 2015 5 2016 6 2017 7
2018 8 2019 9 2020 0 2021 1
Table 1 – Battery pack year code information
M = Month of Manufacture
Month Code Month Code Month Code Month Code
Jan 1 Apr 4 Jul 7 Oct A
Feb 2 May 5 Aug 8 Nov B
Mar 3 Jun 6 Sep 9 Dec C
Table 2 – Battery pack month codes
D = Day of Manufacture